42399270 has 48 divisors (see below), whose sum is σ = 112059792. Its totient is φ = 11119680.

The previous prime is 42399257. The next prime is 42399277. The reversal of 42399270 is 7299324.

42399270 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42399277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1629 + ... + 9351.

It is an arithmetic number, because the mean of its divisors is an integer number (2334579).

Almost surely, 2^42399270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42399270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56029896).

42399270 is an abundant number, since it is smaller than the sum of its proper divisors (69660522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42399270 is a wasteful number, since it uses less digits than its factorization.

42399270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7797 (or 7794 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 42399270 is about 6511.4721837692. The cubic root of 42399270 is about 348.7006790391.

The spelling of 42399270 in words is "forty-two million, three hundred ninety-nine thousand, two hundred seventy".